Further help improvements: Show command aliases in 'hg help something', unless in quiet mode. Show short command description with 'hg help -q something'. Show global options in verbose mode of command help. State that Mercurial is a Distributed SCM.

+ hg clone http://localhost:20059/ copy
requesting all changes
abort: error: Connection refused
255
ls: copy: No such file or directory
+ hg clone http://localhost:20059/foo copy2
requesting all changes
abort: HTTP Error 404: File not found
255